Side by side

Jack Mason Strat-o-timer GMTvsGruppo Gamma Field III GMT Date

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

Add a watch
Strat-o-timer GMT
Jack MasonStrat-o-timer GMT
MSRP $1,099
Field III GMT Date
Gruppo GammaField III GMT Date
MSRP $459
Buy from Jack Mason ↗
Buy used on eBay ↗
Buy from Gruppo Gamma ↗
Buy used on eBay ↗

At a glance

11 of 29 specs differ
Diameter
Strat-o-timer GMT40mm
Field III GMT Date40mm
Power Reserve
Strat-o-timer GMT42h
Field III GMT Date41h
Water Resistance
Strat-o-timer GMT200m
Field III GMT Date200m
MSRP
Strat-o-timer GMT$1,099
Field III GMT Date$459

Full specifications

Case

4 specs
Category
—
GMT
Thickness
13.2mm
14mm
Lug-to-Lug
47mm
48.5mm
Lug Width
20mm
22mm

Crystal & Dial

3 specs
AR Coating
Inner
Yes
Dial Color
—
Black
Lume
None
Super-LumiNova

Movement

3 specs
Caliber
Miyota 9075
Seiko Instruments NH38A
Power Reserve
42h
41h
Complications
None
GMT, Date

Pricing

1 specs
MSRP
$1,099
$459
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